Back in 1975, American photographer Nicholas Nixon captured by his camera general portrait of the four sisters, among whom was his wife Bibi. From the moment the picture was to make an annual tradition. In total, the project eventually lasted exactly thirty-six years. At the time of the first shot, the youngest of the sisters, Mimi, was fifteen years old. And at the time of the last photo, the eldest sister, Bibi, was already 61. The series is called "Brown Sisters" These photos can not be considered highly artistic. However, the project itself is quite interesting to observe how the maturation. It was growing up, because women never get old ;) 35 more images after the break...